Counterterrorism analyst Brian Fishman of the New America Foundation says the Times Square plot is an indication that al-Qaida is either not willing or not able to deploy seasoned, well-trained operatives.

VOA: standard.2010.05.05

Square root of 16, and my plot basically shows it crosses at 4 and-- well, I think that's minus 4.

我的图清楚的显示这个函数,在4和-4两个点和x轴交合。

麻省理工公开课 - 计算机科学及编程导论课程节选

Square root of 16, and my plot basically shows it crosses at 4 and-- well, I think that's minus 4.

我的图清楚的显示这个函数,在4和-4两个点和x轴交合。

麻省理工公开课 - 计算机科学及编程导论课程节选